CELL CYCLECHROMOSOMAL CYCLEMICROTUBULAR CYCLEONIONROOT MERISTEMSThe duration of the different phases of the microtubule and chromosome cycles were estimated in the native diploid cell populations of Allium cepa L root meristems proliferating undisturbed, under steady state conditions, at the physiological ...
Generally, interphase is divided into three main phases that include:· G1 (First gap phase) - Characterized by cell growth and normal cellular activities· S phase (Synthesis) - This is the phase in which DNA is replicated so that the DNA content is doubled...
Mitosis is a form of cell division where the result is two daughter cells that are identical to the original cell. There are four primary phases to mitosis: prophase, metaphase, anaphase, and telophase.Answer and Explanation: Onion root tips are commonly used to study mitosis. They are sites...
On average, what percentage of the cells in an onion root tip is in each of the different phases of the cell cycle? Why does chromatin get condensed during the prophase stage of cell division? What is the type of cell division that occur in the apical mer...
artificially infested substrate. As previously mentioned, PTS and PTSO are volatile compounds [42]. Owing to their low molecular weight (< 300 g/mol), they can diffuse through plant cell membranes and soil, playing a key role in the functioning of the whole ecosystem [34]. The study of...
Pontamine Fast Scarlet 4BS (PFS), a fluorescent dye that binds cellulose with high specificity, has been used to visualize bundles of cellulose bundles in the cell wall of Arabidopsis root epidermis cells [6]. With a confocal microscope, cellulose bundle orientation could be followed over time,...
In a previous work we analysed ultrastructural changes in onion root tip meristem cells (the Allium test), their division activity (the mitotic index), and proportion of division phases (the phase index). Our study revealed inhibition of cell divisions in response to both compounds; however, ...
Bulb dormancy ends with the beginning of the internal sprouting; however, the onion bulb commercial storage life continues until root and sprout elongation [17]. During the shift from dormancy to sprouting, the bulb undergoes a conversion from sink to source organ, allowing cell division in the ...